近年來，柔性傳感器的發展因其在醫療保健、機器人、環境監測和可穿戴技術等各個領域的潛在應用而受到廣泛關注。與傳統的剛性傳感器不同，柔性傳感器具有靈活性、輕量化設計以及多功能等優點。這些傳感器可以無縫地整合到各種曲面物體、紡織品甚至人體部位上，從而實現各種創新和非侵入式感測應用。在本文中，我們報告了柔性壓電傳感器的設計和製造，其中高度排列的聚偏二氟乙烯（PVDF）/石墨烯（Gr）複合膜被引入作為壓電活性元件並通過銅電極連接。將高負載量的 Gr 填料加入到 PVDF 基體中會引起 PVDF 鏈的自組裝，從而產生顯著的 相含量和獨特的壓電性能。該曲面傳感器表現出 0.35VN-1 的出色靈敏度，這是可穿戴傳感器的關鍵性能指標。這種彎曲的傳感器設計可以輕鬆連接到各個身體部位，以跟踪人體部位的運動。此外，我們還開發了一種創新的螺旋壓電傳感器，用於檢測多維負載。螺旋傳感器被製成螺旋帶的形狀，當它發生變形時，它會產生不同的信號模式。為了對傳感器數據進行分類，我們採用了結合 K-mer 的機器學習算法，這種方法的準確率超過 90%。這些柔性壓電傳感設備的製造過程簡單、高效且通用，並且我們的測試取得了令人期待的結果.

Recently, the development of flexible sensors has gained significant attention due to their potential applications in various fields, including healthcare, robotics, environmental monitoring, and wearable technology. Unlike traditional rigid sensors, flexible sensors offer advantages such as flexibility, lightweight design, and versatility of substrate. These sensors can be seamlessly integrated into various surfaces, textiles, or even human body parts, enabling a wide range of innovative and non-intrusive sensing applications. In this paper, we report on the design and fabrication of a flexible piezoelectric sensor, where highly aligned Polyvinylidene fluoride (PVDF)/Graphene (Gr) composite film is introduced as the piezoelectric active component and attached by copper electrodes. Incorporating a high-loading quantity of Gr fillers into a PVDF matrix induced the self-assembly of PVDF chains, resulting in a significant -phase content and unique piezoelectric properties. The curved sensor exhibited excellent mechanical sensitivity of 0.35VN-1 is a key performance metric for wearable sensors. This curved sensor design enables easy attachment to various body parts to track human body parts movements. Additionally, we developed an innovative helical piezoelectric sensor for detecting multi-dimensional oads. The helical sensor was prepared in the shape of a helical strip, and as it underwent deformation, it generated distinct signal patterns. To classify the sensor data, we employed a machine learning algorithm that incorporated K-mer and this approach yielded an accuracy of over 90%. The fabrication process for these flexible piezoelectric sensing devices is simple, efficient, and versatile, and our tests yielded promising results.

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